Compile QT 5.8 to cross-compile Beaglebone

jsulm

@Andrey-Shmelew Quite unusual location.
Can you describe how the layout of your app is?
Is it like this:

/usr/YOUR_APP_EXECUTABLE
/usr/main.qml

?

Andrey Shmelew

@jsulm
by default it is:

project:
windows 10, project path C:/qtqml57/

alt text

after rebuild it's deployed in Linux /usr/ directory

jsulm

@Andrey-Shmelew can you please show how it looks like in /usr? Is it like I asked above? So, how does the deploy directory (/usr in your case) look like?

Andrey Shmelew

@jsulm

sorry for annoying

i just added to a .pro file as usual :

target.path  = /usr
INSTALLS    += target
DISTFILES +=

now on my beaglebone /usr/ folder looks like

alt text

jsulm

@Andrey-Shmelew You should really upload a bigger picture - it is nearly impossible to see anything. I tried hard but could not find main.qml file there. So, where is it?

jsulm

@Andrey-Shmelew And you should not pollute /usr with files of your app. It is better to use /opt/YOUR_APP_NAME.

Andrey Shmelew

@jsulm

sorry about that, picture is really small

and there is no main.qml in /usr

jsulm

@Andrey-Shmelew That's why it is not working

Andrey Shmelew

@jsulm
so if i upload main.qml to beaglebone's /usr/ folder then i get :

QQuickView only supports loading of root objects that derive from QQuickItem.

If your example is using QML 2, (such as qmlscene) and the .qml file you
loaded has 'import QtQuick 1.0' or 'import Qt 4.7', this error will occur.

To load files with 'import QtQuick 1.0' or 'import Qt 4.7', use the
QDeclarativeView class in the Qt Quick 1 module.

jsulm

@Andrey-Shmelew said in Compile QT 5.8 to cross-compile Beaglebone:

QDeclarativeView

It says what you should do: use QDeclarativeView instead of QQuickView

Andrey Shmelew

此回覆已被刪除！

Andrey Shmelew

ok, i solved the problem:
put manually main.qml into /usr/ folder

main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("/usr/main.qml")));
    return app.exec();
}

jsulm

@Andrey-Shmelew You should take a look at "Installing Files" in http://doc.qt.io/qt-5/qmake-advanced-usage.html to avoid manually copying the file. And you should construct the path at runtime, as I suggested before, else if you change the installation directory later you will need to change your code and rebuild the app.